| /* Test ns_name_compress corner cases. |
| Copyright (C) 2017-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <resolv.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <support/check.h> |
| #include <support/support.h> |
| |
| /* Check that we can process names which fit into the destination |
| buffer exactly. See bug 21359. */ |
| static void |
| test_exact_fit (const char *name, size_t length) |
| { |
| unsigned char *buf = xmalloc (length + 1); |
| memset (buf, '$', length + 1); |
| enum { ptr_count = 5 }; |
| const unsigned char *dnptrs[ptr_count] = { buf, }; |
| int ret = ns_name_compress (name, buf, length, |
| dnptrs, dnptrs + ptr_count); |
| if (ret < 0) |
| { |
| support_record_failure (); |
| printf ("error: ns_name_compress for %s/%zu failed\n", name, length); |
| return; |
| } |
| if ((size_t) ret != length) |
| { |
| support_record_failure (); |
| printf ("error: ns_name_compress for %s/%zu result mismatch: %d\n", |
| name, length, ret); |
| } |
| if (buf[length] != '$') |
| { |
| support_record_failure (); |
| printf ("error: ns_name_compress for %s/%zu padding write\n", |
| name, length); |
| } |
| free (buf); |
| } |
| |
| static int |
| do_test (void) |
| { |
| test_exact_fit ("abc", 5); |
| test_exact_fit ("abc.", 5); |
| { |
| char long_name[] |
| = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa." |
| "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa." |
| "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa." |
| "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa."; |
| TEST_VERIFY (strlen (long_name) == NS_MAXCDNAME - 1); |
| test_exact_fit (long_name, NS_MAXCDNAME); |
| long_name[sizeof (long_name) - 1] = '\0'; |
| test_exact_fit (long_name, NS_MAXCDNAME); |
| } |
| return 0; |
| } |
| |
| #include <support/test-driver.c> |